初中英语外研版 (新标准)八年级下册Unit 3 Language in use评课课件ppt

这是一份初中英语外研版 (新标准)八年级下册Unit 3 Language in use评课课件ppt，共17页。PPT课件主要包含了Grammar，现在完成时2，haven’t，hasn’t等内容，欢迎下载使用。
Have yu heard smenews abut space?What are they?
Language practice
Wrk in pairs
hw many planet the name f the planets recently, which ne has been degraded hw t travel in spacedevelpment in Chinarecently, which ne has been degraded the future f explratin in space
Wrk in grups
Example : A: Have yu ever heard that there is a planet degraded recently ?B: N, I haven’t.C: Des B knw which planet is the largest ne ?A: Yes, he / she has.
现在完成时用在什么地方呢？
当我们要表达“某人曾经做过某事”, “某人已经做了某事”等意思时, 英语要用“现在完成时”来表达。
否定句I have nt wrked.He/She has nt wrked.They have nt wrked.
肯定句I have wrked.He/She has wrked.They have wrked.
现在完成时的结构：has/have + dne (动词过去分词)
现在完成时的肯定形式是：现在完成时的一般疑问句形式是：
She / He / It / 或人物的单数形式
has dne sth
I/We/Yu/They或人物的复数形式
have dne sth
现在完成时的一般疑问句形式是：
Has dne sth?
she / he / it / 或sb的单数形式
Have dne sth?
I / we / yu / they / 或sb的复数形式
我父母曾经坐船去大连旅游。她已经完成作业。我父母未曾坐船去过大连旅游。
My parents have travelled t Dalian by ship.
She has dne (finished) her hmewrk.
My parents haven’t travelled t Dalian by ship.
她还没有完成作业。你父母曾经坐船去大连旅游吗？她已经完成作业了吗？
Have yur parents travelled t Dalian by ship?
Has she dne (finished) her hmewrk?
She hasn’t dne (finished) her hmewrk.
要表达“刚刚做完某事”、“已经做完某事”时，我们同样可以用现在完成时。如:I have just heard the news.Astrnauts have already been t the mn.可以看出，just 用来表示“刚刚”，already 用来表示“已经”，一般置于have/has之后，两者都用于肯定句，在否定句中则要用yet,表示“还（未）”。如：The scientists haven’t heard frm it yet.
have been t 与have gne t 的区别
1. have (has) been t意为“曾经去过某地”，表示现在已经不在那里了。可与just, ever, never等连用。如：
I've just been t the pst ffice. 我刚才去邮局了。Have yu ever been t Hangzhu? 你曾经去过杭州吗？Mary has never been t the Great Wall. 玛丽从未去过长城。
have (has) been t 后面可接次数，表示去过某地几次。I’ve been t Beijing three times. 我去过北京三次。They have been t that village several times. 他们已经去了那个村庄好几次了。
2. have (has) gne t 意为“到某地去了”，表示到了某地或正在去某地的途中。总之，说话时该人不在现场，一般不用第一、第二人称代词作句子的主语。如： —Where is Tm? 汤姆在哪里？ —He has gne t the bkshp. 他到书店去了。
与现在完成时连用的几个副词：肯定句:疑问句和否定句: yet 常置于句末already, never, ever, just一般置于助动词have/has之后，过去分词之前。
already, just, ever, yet, never
already, just
ever, yet, never
A: Have yu… ?B: Yes, …/ N, … (using already, just, ever, yet, never)